Lockboxes are pointed out in the text as a good method of internal control over cash. A major advantage to a lockbox account is a. b. d. the company that sets up such an account can visit one place to gather check payments from customers. the company that sets up such an account avoids mailings of payments that are addressed incorrectly. this type of account accelerates the availability of collected cash. company CEOs can use the lockbox payments for travel advances